linux-kernel - [tip:perf/core] perf: Add PERF_SAMPLE_BRANCH

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Message-ID: <tip-c229bf9dc179d2023e185c0f705bdf68484c1e73@git.kernel.org>
Date:	Tue, 20 Oct 2015 02:35:47 -0700
From:	tip-bot for Stephane Eranian <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	peterz@...radead.org, torvalds@...ux-foundation.org,
	acme@...hat.com, vincent.weaver@...ne.edu,
	linux-kernel@...r.kernel.org, tglx@...utronix.de,
	dsahern@...il.com, jolsa@...hat.com, mingo@...nel.org,
	namhyung@...nel.org, eranian@...gle.com, hpa@...or.com
Subject: [tip:perf/core] perf: Add PERF_SAMPLE_BRANCH_CALL

Commit-ID:  c229bf9dc179d2023e185c0f705bdf68484c1e73
Gitweb:     http://git.kernel.org/tip/c229bf9dc179d2023e185c0f705bdf68484c1e73
Author:     Stephane Eranian <eranian@...gle.com>
AuthorDate: Tue, 13 Oct 2015 09:09:08 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Tue, 20 Oct 2015 10:30:53 +0200

perf: Add PERF_SAMPLE_BRANCH_CALL

Add a new branch sample type to cover only call branches (function calls).
The current ANY_CALL included direct, indirect calls and far jumps.

We want to be able to differentiate indirect from direct calls. Therefore
we introduce PERF_SAMPLE_BRANCH_CALL. The implementation is up to each
architecture.

Signed-off-by: Stephane Eranian <eranian@...gle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Vince Weaver <vincent.weaver@...ne.edu>
Cc: khandual@...ux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1444720151-10275-2-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/uapi/linux/perf_event.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 6c72e72..6512213 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -168,6 +168,7 @@ enum perf_branch_sample_type_shift {
 
 	PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT	= 11, /* call/ret stack */
 	PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT	= 12, /* indirect jumps */
+	PERF_SAMPLE_BRANCH_CALL_SHIFT		= 13, /* direct call */
 
 	PERF_SAMPLE_BRANCH_MAX_SHIFT		/* non-ABI */
 };
@@ -188,6 +189,7 @@ enum perf_branch_sample_type {
 
 	PERF_SAMPLE_BRANCH_CALL_STACK	= 1U << PERF_SAMPLE_BRANCH_CALL_STACK_SHIFT,
 	PERF_SAMPLE_BRANCH_IND_JUMP	= 1U << PERF_SAMPLE_BRANCH_IND_JUMP_SHIFT,
+	PERF_SAMPLE_BRANCH_CALL		= 1U << PERF_SAMPLE_BRANCH_CALL_SHIFT,
 
 	PERF_SAMPLE_BRANCH_MAX		= 1U << PERF_SAMPLE_BRANCH_MAX_SHIFT,
 };
--
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